Visual words that are masked and presented so briefly that they cannot be seen may nevertheless facilitate the subsequent processing of related words, a phenomenon called masked priming. It has been debated whether masked primes can activate cognitive processes without gaining access to consciousness. Here we use a combination of behavioural and brain-imaging techniques to estimate the depth of processing of masked numerical primes. Our results indicate that masked stimuli have a measurable influence on electrical and haemodynamic measures of brain activity. When subjects engage in an overt semantic comparison task with a clearly visible target numeral, measures of covert motor activity indicate that they also unconsciously apply the task instructions to an unseen masked numeral. A stream of perceptual, semantic and motor processes can therefore occur without awareness.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1038/26967 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Reevaluating Mask Effectiveness: Insights From Evidence-Based Medicine and Clinical Trials.
Cureus
December 2024
Microbiology, Instituto de Ciências Biomédicas, Universidade de São Paulo, São Paulo, BRA.
During the COVID-19 pandemic, masks were widely promoted and mandated as a key measure to help reduce the transmission of SARS-CoV-2. These policies were primarily informed by laboratory evidence demonstrating the effectiveness of particle filtration, alongside observational studies. While several meta-analyses have indicated that masks may contribute to reducing viral transmission, many of these analyses rely heavily on observational data.
View Article and Find Full Text PDFAssessing the mask-wearing habit as a contributing factor for COVID-19-associated mucormycosis.
J Family Med Prim Care
December 2024
Department of Oral Medicine and Radiology, Post Graduate Institute of Dental Sciences Rohtak, Haryana, India.
Introduction: Association of mask-wearing habit and mucormycosis.
Context: During the second wave of the COVID-19 pandemic, there was an absurd surge in cases of mucormycosis. COVID-19-associated mucormycosis (CAM) was found to be associated with the presence of diabetes, use of systemic steroids, prolonged use of masks, and others.
Late-stage C-H trifluoroacetylation of quinoxaline-2(1)-ones using masked trifluoroacyl reagents.
Org Biomol Chem
January 2025
Jiangsu Key Laboratory of Pesticide Science and Department of Chemistry, College of Sciences, Nanjing Agricultural University, Nanjing 210095, P. R. China.
A strategy for trifluoroacetylation of quinoxaline-2(1)-ones has been investigated. This strategy employs masked trifluoroacyl reagents to obtain trifluoroacetylated quinoxaline-2(1)-ones under metal-, catalyst-, and light-free conditions. This approach is distinguished by its functional group compatibility and tolerance, as well as the simplicity of the experimental process, making it suitable for gram-scale synthesis.
View Article and Find Full Text PDFImpact of Pediatric Posterior Fossa Tumor Treatments on Working Memory Tracts Using Resting-State fMRI and Tractography.
J Neuroimaging
January 2025
Toulouse NeuroImaging Center (ToNIC), INSERM, University of Toulouse Paul Sabatier, Toulouse, France.
Background And Purpose: Working memory, a primary cognitive domain, is often impaired in pediatric brain tumor survivors, affecting their attention and processing speed. This study investigated the long-term effects of treatments, including surgery, radiotherapy (RT), and chemotherapy (CT), on working memory tracts in children with posterior fossa tumors (PFTs) using resting-state functional MRI (rs-fMRI) and diffusion MRI tractography.
Methods: This study included 16 medulloblastoma (MB) survivors treated with postoperative RT and CT, 14 pilocytic astrocytoma (PA) survivors treated with surgery alone, and 16 healthy controls from the Imaging Memory after Pediatric Cancer in children, adolescents, and young adults study (NCT04324450).
Chronic cigarette smoke exposure masks pathological features of Helicobacter pylori infection while promoting tumor initiation.
Cancer Prev Res (Phila)
January 2025
West Virginia University, Morgantown, United States.
Gastric cancer is the fifth most common cancer and the fifth leading cause of cancer deaths worldwide. Chronic infection by the bacterium Helicobacter pylori is the most prominent gastric cancer risk factor, but only 1-3% of infected individuals will develop gastric cancer. Cigarette smoking is another independent gastric cancer risk factor, and H.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!